Blossom Medical manufactures hospital beds and other institutional furniture. The company's comparative balance sheet and income statement for 2019 and 2020 follow.

Blossom Medical Comparative Balance Sheet As of December 31
		2020		2019
Assets
Current assets
Cash		$ 361,000		$ 417,400
Accounts receivable, net		1,080,000		776,500
Inventory		738,000		681,100
Other current assets		381,300		247,000
Total current assets		2,560,300		2,122,000
Property, plant, & equipment, net		8,711,190		8,440,245
Total assets		$ 11,271,490		$ 10,562,245
Liabilities and Stockholders' Equity
Current liabilities		$ 3,210,000		$ 2,846,050
Long-term debt		3,702,700		3,892,700
Total liabilities		6,912,700		6,738,750
Preferred stock, $5 par value		59,000		59,000
Common stock, $0.25 par value		104,650		103,900
Retained earnings		4,195,140		3,660,595
Total stockholders' equity		4,358,790		3,823,495
Total liabilities and stockholders' equity		$ 11,271,490		$ 10,562,245

Blossom Medical Comparative Income Statement and Statement of Retained Earnings For the Year
		2020		2019
Sales revenue (all on account)		$ 10,177,250		$ 9,614,000
Cost of goods sold		5,611,750		5,298,800
Gross profit		4,565,500		4,315,200
Operating expenses		2,840,300		2,634,200
Net operating income		1,725,200		1,681,000
Interest expense		300,350		308,650
Net income before taxes		1,424,850		1,372,350
Income taxes (30%)		427,455		411,705
Net income		$ 997,395		$ 960,645
Dividends paid
Preferred dividends		29,450		29,450
Common dividends		433,400		413,000
Total dividends paid		462,850		442,450
Net income retained		534,545		518,195
Retained earnings, beginning of year		3,660,595		3,142,400
Retained earnings, end of year		$ 4,195,140		$ 3,660,595

Calculate the following profitability ratios for 2020. (Round answers to 1 decimal place, e.g. 50.1%.)

a.	Gross margin percentage		%
b.	Return on assets		%
c.	Return on common stockholders' equity		%